Pipe-bending machine.



No. 873,023. PATENTE) DBC. 10, 1907. J. F. 00X.

PIPE BBNDING MACHINE. APPLICATION FILE. s212112. 1906.

3 SHEETS-SHEET l.

No. 873,623. -PATENTBD DEG. l0, 1907. 3.?. 00X. PIFHBBNBL'NG MACHINE.

APPLICATION FILED SEPT.12,1906.

mls/M705' y@ mezsjg'ffmor@ (als PATENTED DEC. l() 1907.

J. F. COX.

PIPE BENDING MAGHINE. APPLIOATION FILED SEPT. l2, 1906.

Q if,

3 SHEETS-SHEET 3.

' JAMES FILLMORE COX, F .TERSE7 CITY, NEW JERSEY.

PIPE-BENDING MACHINE Specification of Letters Patent.

Patented Dec. 10,1907.

Application filed September 12. 1906. Serial No. 334.220.

T o all whomr it may concern:

Be it known that I, JAMES FILLMORE Cox, a citizen of the United States,and residing at Jersey City, in the county of Hudson. and

. State of New Jersey, have invented certain new and useful improvementsin Pipe-Bending Machines, of which the following is a specification,such as will enable those skilled in the art to which it appertains tomake and use the same.

The object of this invention is to provide an improved pipe bendingmachine which is simple in construction and operation and by means ofwhich a pipe may be bent into segmental form without the use of an innerfilling usually employed to prevent the changing of the cross sectionalform of the bent portion of the pipe; and with this and. other objectsin view the invention consists in a machine of the class speciiiedconstructed and operating as hereinafter described and claimed.

The invention is fully disclosed in the following specification, ofwhich the accom.

panying drawing forms a part, in which the separate parts of myimprovement are designatedl by suitable reference characters in each ofthe views, and in which F`gure l is a front side view of my improvedpipe bending machine; Fig. 2 an end View thereof looking in thedirection of the arrow of Fig. l Fig. 3 a partial horizonta section onthe line of Fig. 2 Figa a par tial horizontal section on the line 4--4of Fig. l Fig. 5 a partial vertical section on the line 5 5 of Fig. land, Fig. 6 a partial vertical section on the line 6-6 of Fig. l.

ln the practice of my invention as shown in the drawing, l provide amain frame a having a top table (L2 provided at the right hand end withan extension a3, and said frame is provided with legs c4 connected bytransverse end members c, and the extension a? of the table is alsoprovided with a le or legs a, and the main frame c is provided at thefront side thereof and at a predetermined distance below the table a2with a horizontal plate member a7.

Mounted vertically in the main frame is a shaft l) having a sup ort orbearing in the frame member al, an said shaft passes4 vertically throughthe table a, and mounted on said shaft immediately above the table a2 isa circular bending block or wheel b3 having an annular groove ll, andthe shaft t above the block or wheel b3 is threaded and provided with anut b5. 'In the form of construction shown, that part of the shaft b onwhich the wheel or block b3 is mounted is angular in cross section asshown in Fig. 3, and they said wheel turns with said shaft, but said"block oi4 wheel may be secured to said shaft, so as to turn therewith,in any desired manner.

An arm c is also connected with the shaft b so as to turn therewith, andsaid arm in the normal position of the parts extends forwardly from saidsha-ft, and is provided with a. longitudinal slot or opening c2, andmounted in said arm is a screw e3 provided at its forward end with atransverse head e4 having a handle c by which said screw may be turnedin either direction. Mounted on' the screw c3, in the slot or opening e2and extending above the arm c, is a die ci, the face of which, adj acentto the wheel or block b3 is provided with av horizontal groove c7 whichcorresponds with the groove l) in the wheel or block b3.

Mounted on the table a2 of the main frame and near the front edgethereof is a longitudinally movable slide d, andpivoted rearwardly ofsaid slide as shown at d2 is a lever d3 which is also pivoted to theslide d at d4," and the connection of the slide d with the table a2 ispreferably .made by means of a horizontal support d5 which is placed onsaid table and with which the slide d is connected by a tongue andgroove connection as shown in Fig. 2, and connected with the rear sideof the slide d is a die block d having a longitudinal segmental grooveal7 in its rear face, which corresponds with the grooves el and b4 inthedie c6 and the wheel or block b3. The die block d is provided at oneend with a transversely arranged arm d which is secured to the end ofthe slide d, and said die block d? is also connected with the slide d bya tongue and groove joint as shown, at d in Fig. 2. The main frame isalso provided with a longitudinal `and vertically arranged hanger r1.8through which the shaft l) passes, and secured. to,said shaft is abeveled gear Wheel e, and the hanger a8 at the right hand side of theshaft t is provided with a horizontal bearin a9 through which is passeda shaft e2 provide with a beveled gear wheel e3 which meshes with thegear Wheel e, and the shaft e2 is provided at its right hand endwith aworm gear wheel e provided with. an annular groove e5 in which the gearteeth of said wheel are the shaft l) is an arm q which is adapted to beadjusted on said -shaft to any desired position, and which operates inconnection with.

the linger]17 ofthe cranlif. The arm g, in the forni of constructionshown, is provided with an opening g2 through which the shalt b .passesand said arm is also provided with .lingerf of the crankf5 parallel jawsg3 through which is passed a bolt gAx by means el which the arm may. oeSecurely clamped on said shalt, but said arm may be connected with saidshalt in any desired way,

The main frame c is provided near the right hand end thereof with avertically arranfred hanger support lt, and secured to the lower endthereotV is a plate It2 with which is connected a vertically movableslide t, the connection between the slide lt and the plate h2 being atongue andr groove connection, and connected with the vertically movableslide h3, also hy means of a tongue and groove construction is aforwardly and bacliwardly movable support Irl which is pivoted its' rearend to the plate lt as shown .at lt, and said support 7L is adapted toswinfr in a vern tical plane. i

The support l# carries a horizontally arranged worin shaft 'i whichranges forwardly and bacliwardly 4of the machine, and is pro vided atits rear end with a belt or power wheel t, on which is placed a belt twhich is driven from any suitable source ol power` or power mechanism.Placed at the right hand end of the a m f and the upwardly directed'Enger or member f2 thereof is a spring j which serves to force said armto the lel't, am`

arranged horizontally in. the bottom oll the main trame is a shalt orrod A: to which is pivoted a pedal lever le to the rear end ol which ispivoted a rod fc3 the upper end o t which is pivoted to the support '/rat kt.

,ai ln the normal position of the separate parts of this machine, thepin projects through the support lt and through the plate ha and vslide,715* into the support h4, and Isaid support is held so thatthe shaft twill gear with the wheel e4. Il now the shaft l) be turned, the arm gwill operate in connection with the and force the arinf to the right. lnthis operation the piuf wil. he withdrawn from the-vertically movableslide lts and the support 7L, and said support will drop down as shownin llij. .5, and the worin shalt twill. be disconnectedll'rom the wheelc", and 'the movement ot the shalt b will he stopped. When itis desiredto start the arenas shaft l), the pedal lever k2 is operated to raisethe support It and the pin f3 is automatically forced into the positionshown in Fig. l, and the shal t i is thrown into gear with the wheel c4.

ln Fig. 3, l have shown at m a pipe to be bent, and this pipe is placedlongitudinally of the table (l2, and in the groove Z7 of the die blocklc and the end of said pipe to be connected is inserted .between the diec and the wheel or block tf. A mandrel a is also inserted into the pipe'm so that 'the inner end thereof will be approximately inline with thelongitudinal center ol the arm c as shownin l 3, and the screw c isturned so as to torce the die cj against the end of the pipe m and clampthe same between said die and wheel or block lf. operated so as to raisethe support 71,4 of the shaft t and throw said shaft into gear with thewheel e", and the vertically arranged shaft L is turned. llhe extent ofthe rotation of the shaft l1 will depend on the position of the arm g,and the position ol the arm g will depend upon the len sth of the bendwhich it is desired to give to theend oli the pipe, and when said arm gstrikes the finger f7 of the cranlif"l the slide or arm f" will beforced to the right against the operation of the springr and the pin fwill he disconnected from t 1e l support at, and said support will dropdown and discnnect the shaft t from the wheel et. lt will therefore beseen that the operation of the rotation of the shalt l) is automaticallystopped at each vturn by the arm g, and the parts in connection withwhich said arm operates, and the machine is thrown into operation andthe shaft I turned by means of the pedal lever ln the operation ol" thismachine, the bending wheel or block Il and the arm c turn with the shaltl), 'and thev die e securely holds the pipe which is drawn from themandrel m and turns with the wheel or block b3 as indicated by thedotted lines o in Fig. 3, and the end of the mandrel supports, the pipeat the bending point thereof, and thus prevents the shrinking); of thesides of the pipe, or a change in the transverse term thereof, thebending portion of the pipe retaining at'all .times its circular 'lorinin. transverse section. ln this way a pipe may be bont at its end, or atany point ol'- its length into'seg'mental or circular form, the radiusof the bending; being iletermined by the diameter' of the block or wheell5,

Although, l have shown and described particular means for driving myimproved pipe beiuliirfe,y machine, or lor turnii'igr the shaft and. torthrowing said shaft into and out of meration itwill be apparent that thechanges in and inodilications of the means herein shown and describedfor driving the shalt l) and :tor vthrowing said shalt into and out otoperation, may he made without deies parting from lthe Spirit ol: myinvention or sacrificing its-advantages, and .l reserve the right tomake all such alterations inand modifications of these features of 'theconstruction herein shown and described as fairly come within the scopeof the invention.

Having inlly described my invention, what I claim as new and desire tosecure by Letters Patent, is zl. In a machine of the class described thecombination with a bending former and a vertically arranged shaft Aforactuating said iornier of a. horizontally arranged shaft geared inconnection with the vertically arranged shaft and provided with a wormgear wheel', a support pivoted adjacent to the worin gear wheel, a wormshaft mounted in said support, and means Vfor operating seid support Asoas to throw the Worm shaft into and out ol connection with the worinwheel, substantialiy shown and described.

In a machine of the class described the combination with a bending'ternir-,r and a vertically arranged shalt lor actuating said l'ormer ota horixontally arranged shaft providedwith a worm gea-r wheel, ainm'abie support mounted adjacent to the Worin gear wheel, a worm shalit mounted in said support and adapted to operate 1n connection -withthe worm gear wheel, and devices 1n operaytive connection with thevertically arranged .tion 'with the Worin gear, substantially as' shownand described.

i?. ln a machine of the class described the combination with a bendingformer and a vertically arranged shaft for actuating said former of ahorizontally arranged shaft provided with a Worin gear Wheel, a movablesupport inonnted adjacent to the W'orin gear wheel, a Worm shaftmountedin said support and adapted to operate in connection with the worin gearWheel, devices in operative connection with the vertically arrangedshaft and with said support for automatically throwing the worin shaftout et connection with the worin gear, and a pedal lever in connectionwith said support and whereby the Worm shaft may be thrown back intoconnec- 'tion with the Worin gear wheel, substantially as shown anddescribed. e

In testimony that I claim the foregoing as my invention I have signed mynaine in presence of the subscribing Witnesses this 10th day ofSeptember, 1906.

JAMES FILLMORE COX.

`Witnesses:

@LGA A. REnBErN, F. A. STEWART.

